皮皮学，免费搜题
登录
搜题
【单选题】
为保证轴承内圈与轴肩端面接触良好,轴承的圆角半径r与轴肩处圆角半径r 1 应满足( ) 的关系 。A.
r≤r l ；
B.
r＞r l ；
C.
r＜r 1 。
D.
r=r 1 。
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
反馈参考答案：
举一反三
【单选题】He was sure that he______his wallet in the office .
A.
left
B.
would leave
C.
has left
D.
had left
【简答题】设可微函数f(x，y)在点(x 0 ，y 0 )处取得极小值，则下列结论正确的是______． (A)f(x 0 ，y)在y=y 0 处的导数大于零 (B)f(x 0 ，y)在y=y 0 处的导数等于零 (C)f(x 0 ，y)在y=y 0 处的导数小于零 (D)f(x 0 ，y)在y=y 0 处的导数不存在
【单选题】He was sure that he______his wallet in the office.
A.
left
B.
would left
C.
had left
D.
has left
【单选题】He was sure that he______his wallet in the office.
A.
left
B.
would leave
C.
had left
D.
has left
相关题目：
参考解析：
知识点：
题目纠错 0
发布
